Just the right length

Pop songs are 200 seconds long because the mechanical properties of 78 and 45 rpm records can deliver one song with decent fidelity of that length. They can’t handle ten minutes, and one minute is too short to charge for. The number of books carried by a local bookstore was the right amount to balance

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Paddling upstream

We notice the current most when we’re headed against it. It’s easy to take our advantage for granted when we’re headed the other way and it’s helping us. Related: When I’m on my bike, I generally hope that drivers will cut me some slack–a lesson that’s easy to forget when I’m the one who’s driving.

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